ADM_PORT                = 7777
LK_PORT                 = 8888
REPLY_PORT              = 8889
DROP_PORT               = 9999
ACQUIRE_LOCK            = 0
RELEASE_LOCK            = 1
SHARED_LOCK             = 0
EXCLUSIVE_LOCK          = 1
COUNT_MAX               = 16384
NUM_LOCKS               = 16384
LENGTH_ARRAY            = 16384
SHRINK                  = 1
MODIFY                  = 2
DEDICATED_SERVER_IP     = 101
CONTROLLER_IP           = 102